unofficial
Britishadjective
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not official or formal
an unofficial engagement
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not confirmed officially
an unofficial report
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(of a strike) not approved by the strikers' trade union
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(of a medicinal drug) not listed in a pharmacopoeia
Other Word Forms
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Unofficial poll time: How are you liking the World Cup now?
From The Wall Street Journal • Jun. 29, 2026
Unofficial app shops like Mr Pomperleau's operate in a legal grey area by signing up customers to software developer accounts.
From BBC • Feb. 13, 2025
Unofficial tallies from Wednesday’s election show him winning a decisive victory, with nearly 60 percent of the vote.
From New York Times • Feb. 15, 2024
You don’t need to make your family disappear or defend your home from gold-toothed bandits to enjoy the silliness of “The Unofficial Home Alone Cookbook.”
From Seattle Times • Nov. 20, 2023
Unofficial diplomatic exchanges certainly took place between the two governments during the war, and no rancor for the past appears to exist on either side to-day.
From The Rising Tide of Color Against White World-Supremacy by Stoddard, Lothrop
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
